[src/trunk]: src/sys/arch/x86/include merge the i386 and amd64 gdt.h files.

[christos <christos%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/0a8440b45103
branches:  trunk
changeset: 378936:0a8440b45103
user:      christos <christos%NetBSD.org@localhost>
date:      Fri Apr 30 15:37:05 2021 +0000

description:
merge the i386 and amd64 gdt.h files.

diffstat:

 sys/arch/x86/include/gdt.h |  67 ++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 67 insertions(+), 0 deletions(-)

diffs (71 lines):

diff -r 0048ebddf88e -r 0a8440b45103 sys/arch/x86/include/gdt.h
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/x86/include/gdt.h        Fri Apr 30 15:37:05 2021 +0000
@@ -0,0 +1,67 @@
+/*     $NetBSD: gdt.h,v 1.1 2021/04/30 15:37:05 christos Exp $ */
+
+/*-
+ * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by John T. Kohl and Charles M. Hannum.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _X86_GDT_H_
+#define _X86_GDT_H_
+
+#if !defined(_LOCORE)
+
+struct cpu_info;
+void gdt_init(void);
+void gdt_init_cpu(struct cpu_info *);
+void gdt_alloc_cpu(struct cpu_info *);
+
+#ifdef _LP64
+struct x86_64_tss;
+int tss_alloc(struct x86_64_tss *);
+#else
+struct i386tss;
+int tss_alloc(const struct i386tss *);
+#endif
+
+void tss_free(int); 
+int ldt_alloc(void *, size_t);
+void ldt_free(int);
+
+#endif /* LOCORE */
+
+
+#ifndef MAXGDTSIZ
+# define MAXGDTSIZ             65536   /* XXX: see <x86/pmap.h> */
+#endif
+
+#ifndef MAX_USERLDT_SIZE
+# define MAX_USERLDT_SIZE      65536   /* XXX: see <x86/pmap.h> */
+#endif
+
+#define MAX_USERLDT_SLOTS      (int)(MAX_USERLDT_SIZE / sizeof(union descriptor))
+
+#endif /* _X86_GDT_H_ */